Albert moore and a



laith tnts getraut @fitta ALBERT MOORE AND A. D. Howes, OF SOUTH ADAMS, MASSACHUSETTS.

Letters Patent N0. 77,517, dated May 5, 1868.

@the ttrtnle referat it in tijm ttitttt tant mit mating putt nf tige time.

TO ALL WHOM IT MAY CONCERN:

De it known that we, ALBERT MOORE and A. l). Howns,'of South Adams, inthe county of Berkshire, 'andA State of Massachusetts, have invented a new and improved Double Steam-Valve; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ofthis specification.

The object of this invention is to furnish a valve for steam, water, and gas, or other tluids or liquids, eon-- structed in such a manner that it shall be durable and simple and perfect in its operation; and it consists in the arrangement of two valves with a revolving screw-stem, and in the construction and arrangement of parts as hereinafter described.

Figure 1 represents a vertical central section through the line :c :1: of g. 2.

Figure 2 is a sectional view throughthe line y y 'of iig. 1.

Similar letters of referenceindicate correspondingvparts.

A A' is the shell or body of the valve.

B is the valve-stem.

C are thc valves.

D is4 lthe valve-block, in which is formed a female screw for the screw-thread on the stem.

E represents the valve-seats.

The shell is made eiltwo pieces of metal, which are secured together by screws, f, forming a. valve-chamber, B.-

The `valve-seats are in -the part A, and the valves with the stem aro attached to and supportcdby the part A. The vvalve-stem is stepped into tho part A, as seen at g, and it is prevented from movingup or down (or longitudinally) by the colla-r i.

` J is .a smiling-box, around the upper portion of the shell A and the stem.

The valves are attached to wings or flanges on the block D, as seen in the drawing, so that, when the stem is revolved, they move simultaneously. l i

The block Dis s uare in its cross-section where it )la s in A as seen' in liv. 2 the valves bein secured a l 7 n a g to the projecting flanges thereon.

The course. of the steam or water is indicated by the arrows.

By taking ont the screwsf und removing the part A', the valves and seats are exposed for inspection.:or.".y

repairs.

arrangement is such that simplicity, durability, and efliciency are combined.

Having thus described our invention, we elnim :is new, and desire to secure by Letters Patent-.-

1. The shell, formed of the parts A A', with the vulve-chamber B', substantially as described.

2. lhe block D and the valves C C, in combination with the shell and valve-stem B, when arranged substantially as shown and described. l V

ALBERT MOORE,

Witnesses:

M. M. BAnNEs,

Tnos. H. RAY.'

'There being no grinding er revolving motion given thc valves, they are not liable to wear, and the Whole- 

